Dunitz/czi hosted test server (#2254)

update hosted unit tests to use wsgi server instead of cellxgene packages

backend/czi_hosted/app/app.py

@@ -168,7 +168,7 @@ def rest_get_data_adaptor(func):
     return wrapped_function
 
 
-def dataroot_test_index():
+def  dataroot_test_index():
     # the following index page is meant for testing/debugging purposes
     data = '<!doctype html><html lang="en">'
     data += "<head><title>Hosted Cellxgene</title></head>"
@@ -475,6 +475,6 @@ class Server:
 
         auth = server_config.auth
         self.app.auth = auth
-        if auth.requires_client_login():
+        if auth and auth.requires_client_login():
             auth.add_url_rules(self.app)
         auth.complete_setup(self.app)